LED display main components

LED display mainly consists of the following components: LED unit board, wiring, power supply, control card.

First, LED unit board: it is one of the core components of the LED display, the unit board is good or bad, directly affects the effect of the display. The unit board is composed of LED module, driver chip and PCB circuit board, LED module, in fact, by many LED light-emitting points with resin or plastic encapsulated dot matrix and become.

Second, the line: it can be divided into data lines, transmission lines and power lines. Data line is used to connect the control card and LED unit board line. Transmission line is used to connect the control card and computer. Power line is used to connect the power supply and control card and LED unit board, connect the unit board of the power line of the copper core diameter of not less than 1mm.

Third, the power supply: power supply is generally used is a switching power supply, 220V input, 5V DC output. It should be pointed out that, due to the led display screen belongs to the precision electronic equipment, so switching power supply should be used, can not be used transformer.

Fourth, the control card: we recommend the use of low-cost bar screen control card, you can control 1/16 sweep of 256x16 points of the two-color screen, you can assemble the most cost-effective LED screen. The control card belongs to the asynchronous card, that is to say, the card can be powered off to save information, do not need to connect to the PC can display the information stored in it.